Finding the Fourth Proportional to 120,851.97, 181,106.09 and 89,011.68
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Solution
The fourth proportional to 120,851.97, 181,106.09 and 89,011.68 is: 133,390.94
Step by Step Solution
- Step 1: Write the proportion equation
120,851.97 : 181,106.09 = 89,011.68 : x - Step 2: Convert to fraction form
120,851.97/181,106.09 = 89,011.68/x - Step 3: Cross multiply
120,851.97x = 181,106.09 × 89,011.68 - Step 4: Simplify right side
120,851.97x = 16,120,557,329.13 - Step 5: Solve for x
x = 16,120,557,329.13/120,851.97 - Step 6: Final answer
x = 133,390.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.